<template>
  <div class="main">
    <a-form id="formLogin" ref="formLogin" class="user-layout-login" :form="form" @submit="handleSubmit">
      <div class="title">用户登录</div>
      <div class="sub-title">USER LOGIN</div>
      <a-alert v-if="isLoginError" type="error" show-icon style="margin-bottom: 24px;" :message="accountLoginErrMsg" />
      <a-form-item>
        <a-input
          v-decorator="[
            'account',
            {
              rules: [{ required: true, message: '请输入帐户名' }, { validator: handleUsernameOrEmail }],
              validateTrigger: 'change'
            }
          ]"
          size="large"
          type="text"
          placeholder="账号"
        >
          <a-icon slot="prefix" type="user" :style="{ color: 'rgba(0,0,0,.25)' }" />
        </a-input>
      </a-form-item>

      <a-form-item>
        <a-input
          v-decorator="['password', { rules: [{ required: true, message: '请输入密码' }], validateTrigger: 'blur' }]"
          size="large"
          type="password"
          autocomplete="false"
          placeholder="密码"
        >
          <a-icon slot="prefix" type="lock" :style="{ color: 'rgba(0,0,0,.25)' }" />
        </a-input>
      </a-form-item>

      <a-form-item style="margin-top:24px">
        <a-button
          size="large"
          type="primary"
          html-type="submit"
          class="login-button"
          :loading="state.loginBtn"
          :disabled="state.loginBtn"
        >
          确定
        </a-button>
      </a-form-item>
    </a-form>

    <two-step-captcha
      v-if="requiredTwoStepCaptcha"
      :visible="stepCaptchaVisible"
      @success="stepCaptchaSuccess"
      @cancel="stepCaptchaCancel"
    />
  </div>
</template>

<script>
import md5 from 'md5'
import TwoStepCaptcha from '@/components/tools/TwoStepCaptcha'
import { mapActions } from 'vuex'
import { getSmsCaptcha, twoStepCode } from '@/api/modular/system/loginManage'

export default {
  components: {
    TwoStepCaptcha
  },
  data() {
    return {
      customActiveKey: 'tab1',
      loginBtn: false,
      // login type: 0 email, 1 username, 2 telephone
      loginType: 0,
      isLoginError: false,
      requiredTwoStepCaptcha: false,
      stepCaptchaVisible: false,
      form: this.$form.createForm(this),
      state: {
        time: 60,
        loginBtn: false,
        // login type: 0 email, 1 username, 2 telephone
        loginType: 0,
        smsSendBtn: false
      },
      accountLoginErrMsg: ''
    }
  },
  created() {
    twoStepCode({})
      .then(res => {
        this.requiredTwoStepCaptcha = res.result.stepCode
      })
      .catch(() => {
        this.requiredTwoStepCaptcha = false
      })
    // this.requiredTwoStepCaptcha = true
  },
  methods: {
    ...mapActions(['Login', 'Logout']),
    // handler
    handleUsernameOrEmail(rule, value, callback) {
      const { state } = this
      const regex = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]{2,3}){1,2})$/
      if (regex.test(value)) {
        state.loginType = 0
      } else {
        state.loginType = 1
      }
      callback()
    },
    handleTabClick(key) {
      this.isLoginError = false
      this.customActiveKey = key
      // this.form.resetFields()
    },
    handleSubmit(e) {
      e.preventDefault()
      const {
        form: { validateFields },
        state,
        customActiveKey,
        Login
      } = this

      state.loginBtn = true

      const validateFieldsKey = customActiveKey === 'tab1' ? ['account', 'password'] : ['mobile', 'captcha']

      validateFields(validateFieldsKey, { force: true }, (err, values) => {
        if (!err) {
          const loginParams = { ...values }
          delete loginParams.account
          loginParams[!state.loginType ? 'email' : 'account'] = values.account
          loginParams.password = values.password //md5(values.password)
          Login(loginParams)
            .then(res => this.loginSuccess(res))
            .catch(err => this.requestFailed(err))
            .finally(() => {
              state.loginBtn = false
            })
        } else {
          setTimeout(() => {
            state.loginBtn = false
          }, 600)
        }
      })
    },
    getCaptcha(e) {
      e.preventDefault()
      const {
        form: { validateFields },
        state
      } = this

      validateFields(['mobile'], { force: true }, (err, values) => {
        if (!err) {
          state.smsSendBtn = true

          const interval = window.setInterval(() => {
            if (state.time-- <= 0) {
              state.time = 60
              state.smsSendBtn = false
              window.clearInterval(interval)
            }
          }, 1000)

          const hide = this.$message.loading('验证码发送中..', 0)
          getSmsCaptcha({ mobile: values.mobile })
            .then(res => {
              setTimeout(hide, 2500)
              this.$notification['success']({
                message: '提示',
                description: '验证码获取成功，您的验证码为：' + res.result.captcha,
                duration: 8
              })
            })
            .catch(err => {
              setTimeout(hide, 1)
              clearInterval(interval)
              state.time = 60
              state.smsSendBtn = false
              this.requestFailed(err)
            })
        }
      })
    },
    stepCaptchaSuccess() {
      this.loginSuccess()
    },
    stepCaptchaCancel() {
      this.Logout().then(() => {
        this.loginBtn = false
        this.stepCaptchaVisible = false
      })
    },
    loginSuccess(res) {
      this.$router.push({ path: '/' })
      this.isLoginError = false
    },
    requestFailed(err) {
      this.accountLoginErrMsg = err
      this.isLoginError = true
      //提示框方式去掉
      /*this.$notification['error']({
        message: '错误',
        description: err,//((err.response || {}).data || {}).message || '请求出现错误，请稍后再试',
        duration: 4
      })*/
    }
  }
}
</script>

<style lang="less" scoped>
.user-layout-login {
  .title {
    color: #1976D2;
    font-size: 22px;
    text-align: left;
  }
  .sub-title {
    color: #ddd;
    text-align: left;
    margin-bottom: 30px;
  }
  label {
    font-size: 14px;
  }

  .getCaptcha {
    display: block;
    width: 100%;
    height: 40px;
  }

  .forge-password {
    font-size: 14px;
  }

  button.login-button {
    padding: 0 15px;
    font-size: 16px;
    height: 40px;
    width: 100%;
  }

  .user-login-other {
    text-align: left;
    margin-top: 24px;
    line-height: 22px;

    .item-icon {
      font-size: 24px;
      color: rgba(0, 0, 0, 0.2);
      margin-left: 16px;
      vertical-align: middle;
      cursor: pointer;
      transition: color 0.3s;

      &:hover {
        color: #1890ff;
      }
    }

    .register {
      float: right;
    }
  }
}
</style>
